Prysmian Cables: What They're Made Of and Why It Matters for Your Next Project

If you're specifying Prysmian, you're paying for reliability, not innovation — and that's exactly right for most projects

I've spent the last 6 years coordinating cable procurement for industrial projects, and I've handled well over 200 rush orders for everything from fire alarm cable to 35kV power cable. Here's what I've learned: Prysmian cables are built with proven materials and rigorous testing, not experimental tech. That's their strength. But you need to know exactly what you're getting, because the spec sheet doesn't tell the whole story.

When I'm triaging a rush order for a data center or a manufacturing plant, the first question isn't "what's the cheapest option?" — it's "what cable can I trust to not fail on-site?" And that's where understanding what a cable is made of becomes critical.

What is a Prysmian cable actually made of?

Let's get specific. A typical Prysmian power cable (say, their widely used Afumex range) is constructed from:

• Conductor: Electrolytic-grade copper (99.9% pure) or aluminum, depending on the application. For fire alarm cables, it's almost always tinned copper for corrosion resistance.
• Insulation: Cross-linked polyethylene (XLPE) for most power cables, or EPR (ethylene propylene rubber) for flexible applications. For fire-rated cables, they use LSZH (Low Smoke Zero Halogen) compounds.
• Bedding: An extruded layer that provides mechanical protection and acts as a barrier between the insulation and the armor.
• Armor: Galvanized steel wire (SWA) or aluminum wire (AWA) for mechanical protection. Prysmian uses a specific winding process that gives better flexibility than some competitors.
• Sheath: PVC or LSZH, depending on the standard. The LSZH compound is a proprietary blend — and that's where Prysmian's R&D really shows.

I remember a project in March 2024 where we needed 2,000 meters of fire alarm cable for a hospital retrofit. The spec called for LSZH throughout. We went with Prysmian's FP200 Gold — which uses a mica tape + LSZH construction — because the alternative from a budget vendor had a PVC inner layer that would have violated the smoke emission requirements. Saved us a potential $15,000 penalty for non-compliance.

The surprise wasn't the price difference. It was how much hidden value came with the Prysmian product — the detailed test reports, the traceability codes on every drum, and the technical support when we had a question about bending radius in tight spaces.

What about transparent smartphone cables? (Spoiler: that's not Prysmian's world)

If you came here searching for "transparent smartphone" and "power supply" and landed on Prysmian, let me clarify. Prysmian doesn't make the transparent USB-C cables you see on Instagram. They're in a completely different business — infrastructure-grade cables for buildings, utilities, and industrial plants.

That said, if you're asking "what is made of" in a broader sense — like, what materials go into a power supply cable for your phone — that's usually a basic PVC and copper construction, made by companies like Draka Prysmian (the subsidiary that handles some of the commodity cable lines). But Draka Prysmian's focus is still on construction and industrial cables, not consumer electronics.

So if you're a contractor or a procurement manager looking for reliable power cables for your next project, Prysmian is worth your attention. If you're looking for a phone charger, you're in the wrong place.

When Prysmian makes sense — and when it doesn't

Based on our internal data from 200+ rush orders across multiple vendors, here's where Prysmian consistently performs:

Prysmian excels at:

• Fire-rated cables: Their FP and Afumex ranges meet BS 5839-1 and EN 50200 standards with consistent test results. I've seen test failures from other brands that Prysmian simply doesn't have.
• High-voltage power cables: For 11kV and above, their XLPE insulation process is industry-leading. The failure rate on their MV cables is noticeably lower than some Asian imports.
• Projects requiring full traceability: Every drum comes with a test certificate and a batch number that can be traced back to the production line. That's a big deal for regulated industries.

Where you might want alternatives:

• Simple commodity cables: If you need standard PVC/PVC building wire, you can get comparable quality from brands like Nexans or even house brands at a 15-20% discount.
• Extremely tight budgets: Prysmian rarely wins on price. They win on reliability and support. If your project has zero tolerance for failure, they're worth it. If you just need wire in a wall, look elsewhere.
• Lead times: Prysmian's availability varies by region. In the US, after their acquisition of Encore Wire, they've improved lead times on some lines. But specialty cables like fire-rated LSZH still have longer lead times than commodity PVC cables.

The most frustrating part of cable procurement: you don't know you've made the wrong choice until something fails. And that's usually when the wall is closed up or the trench is backfilled.

The bottom line on Prysmian cables

Here's what I'd tell a colleague: Spec Prysmian when failure is not an option, and you have the budget to match. Their materials are well-proven — copper conductors, XLPE insulation, LSZH sheaths — and their quality control is genuinely better than most. But don't pay a premium for Prysmian on a simple building wire run where a lesser brand will do the same job.

And if you're still searching for "transparent smartphone" and "power supply" — no, Prysmian won't help you there. But if you're building the network that powers those smartphones, they might just be your best bet.

Per USPS pricing effective January 2025, even a first-class stamp costs $0.73. Compare that to the cost of a failed cable installation — easily $5,000-$20,000 in labor alone — and you'll understand why material selection matters.